discussion of the Smith Official DNA Project group R-M269-41 that includes lineages that we believe all match together, even when the specific paper trail linkages between ancestors are unknown or cannot be proven.

For the Smith Official DNA Project (All Locations) a minimum
of 25, or better, 37 YDNA markers, is strongly recommended. Many times one can appear
to match other kits but the match falls apart after 12 markers. We do not
attempt to match kits into groups on less than 25 with the exception of a strong
paper trail or known family kinship with another tester.